CN102310845B - Wheel crane and bearing structure thereof - Google Patents
Wheel crane and bearing structure thereof Download PDFInfo
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- CN102310845B CN102310845B CN 201110161293 CN201110161293A CN102310845B CN 102310845 B CN102310845 B CN 102310845B CN 201110161293 CN201110161293 CN 201110161293 CN 201110161293 A CN201110161293 A CN 201110161293A CN 102310845 B CN102310845 B CN 102310845B
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Abstract
The invention discloses a bearing structure of a crane. The bearing structure comprises a frame rear section and a fixed supporting leg; a box-type body for stretching of a movable supporting leg is extended at a web plate on the lateral surface of the fixed supporting leg; a frame rear section web plate of the frame rear section is connected with the fixed supporting leg; and the end of the frame rear section web plate extends to the lateral surface of the fixed supporting leg and is fixed on the lateral surface of the fixed supporting leg by welding. The end of the frame rear section web plate extends to the lateral surface of the fixed supporting leg and is fixed on the lateral surface of the fixed supporting leg by welding, the formed welded seam effectively avoids stress concentration at the joint of the frame rear section and the fixed supporting leg due to sudden change of the section, the stress concentration position is positioned at the end of the frame rear section web plate, i.e., the stress concentration position and a surrounding bearing plate form an integrated structure, and the strength of the frame rear section web plate is higher than that of the welded seam, sothe influence of stress concentration can be reduced, the connecting reliability of the frame rear section and the fixed supporting leg is improved, and the stability in hoisting operation is ensured. The invention also discloses a wheel crane comprising the bearing structure of the crane.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly a kind of hoisting crane load larrying member.The invention still further relates to a kind of wheel crane that comprises above-mentioned hoisting crane load larrying member.
Background technology
Crane frame is the major bearing structures on hoisting crane chassis, can place and fix other parts, and the two ends of vehicle frame are connected on the fixed supporting leg.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is a kind of typical hoisting crane load larrying member scheme drawing, and this figure mainly illustrates vehicle frame and fixed supporting leg part; Fig. 2 be among Fig. 1 the vehicle frame back segment with the back fixed supporting leg connection diagram.
As shown in Figure 1, vehicle frame comprises vehicle frame leading portion 101 and vehicle frame back segment 102, and between fixed supporting leg 200 and the back fixed supporting leg 300, vehicle frame was generally the big box type construction of thin-walled before vehicle frame back segment 102 was connected in, arrange that dividing plate, the middle part of vehicle frame arrange the revolution mounting center 1021 of car load at interval in the vehicle frame.Fixed supporting leg also is box type construction, and the side of preceding fixed supporting leg 101 and back fixed supporting leg 102 all has the square chest 301 that stretches out, and is equipped with movable supporting legs in the square chest 301, and during work, movable supporting legs can stretch out, and is supported in ground, thereby supports car load work.
During the lift heavy operation, fixed supporting leg and movable supporting legs are propped up whole vehicle frame and the derricking gear that is installed on the vehicle frame, and the weight of lifting and derricking gear deadweight act on the whole body frame structure for automotive by being installed in the bearing race of the revolution mounting center 1021 on the vehicle frame.Derricking gear usually can operation in 360 degree scopes, in the time of directly over the derricking gear arm is positioned at back fixed supporting leg 300, back fixed supporting leg 300 stressed maximums, not only bear the derricking gear of vehicle frame transmission and the gravity of lift heavy, also bear deadweight and the non-bearing object load of vehicle frame, the lifting structure also can be passed to the moment of torsion that produces back fixed supporting leg 300 when rotating.Therefore, the friction stress of moment of torsion and vertical load generation is mainly born in the junction of vehicle frame back segment 102 and back fixed supporting leg 300, and, the friction stress maximum position is positioned at the section that vehicle frame back segment 102 and back fixed supporting leg 300 intersect, show as the incline place that back fixed supporting leg 300 and vehicle frame back segment 102 intersect among Fig. 2, stress maximum position B as shown in the figure.
Among Fig. 2, vehicle frame back segment 102 direct inclines with back fixed supporting leg 300 weld, this incline is the incline towards the end face of vehicle frame back segment 102, the fillet weld in the vertical position 400 that forms extends along this incline, then fixed supporting leg 300 suffered friction stresss in back are mainly born by the fillet weld in the vertical position 400 of vehicle frame back segment 102 and fixed supporting leg 300 junctions, back, the destructiveness of this kind friction stress butt welded seam is very big, influences the reliability that vehicle frame back segment 102 is connected with back fixed supporting leg 300.
In addition, in view of the requirement of vehicle frame rigidity and intensity, and the restriction of hoist design specification, when vehicle frame is connected with fixed supporting leg, the upper surface of vehicle frame is concordant with the upper surface of fixed supporting leg usually, and the height of vehicle frame is greater than the fixed supporting leg height on the square chest 301, less than the whole height of fixed supporting leg.Therefore, incline with fixed supporting leg is the boundary, analyze bending-twisting cross section, the incline left and right sides, as shown in Figure 2, vehicle frame back segment 102 cross-sectional areas in its left side are bigger, back fixed supporting leg 300 cross-sectional areas on right side are less (to be that back fixed supporting leg 300 cross-sectional planes on the square chest 301 are less, the lower end of back fixed supporting leg 300 arranges for the flexible square chest 301 of movable supporting legs, be hollow structure, do not bear moment of torsion), so undergo mutation in the cross section, the left and right sides of incline, left side bending-twisting section modulus is big, stress is less, and right side bending-twisting section modulus is little, and stress is bigger, then the left and right sides unbalanced stress of incline is even, cause the stress at incline place more concentrated, mainly concentrate on focal point of stress B ', as shown in Figure 2.Because fillet weld in the vertical position 400 just in time is arranged in the incline place, i.e. abrupt change of cross-section place, then stress is stronger to the destructiveness of fillet weld in the vertical position 400.During the operation of hoisting crane lift heavy, fillet weld in the vertical position 400 is easy to generate crackle at focal point of stress B ', along with crackle expansion, the fillet weld in the vertical position 400 of vehicle frame back segment 102 and fixed supporting leg 300 junctions, back from focal point of stress B ' to vehicle frame on the weld seam on plane ftracture fully.Therefore, the intensity of the junction of vehicle frame back segment 102 and back fixed supporting leg 300 is the weakest positions, the processing means all are to do simple the reinforcement to handle around fillet weld in the vertical position 400 basically at present, such as, brace panel, diagonal bar plate etc. are installed, these modes can't fundamentally be improved the strained condition of this place's structure, stress is concentrated the main destructive factor that remains junction fillet weld in the vertical position 400, and the plate that increases has increased the weight of welding capacity, postwelding is because the welding residual stress that welding deformation causes is intersected in focal point of stress B ', and it is even more serious that this place's stress is concentrated.
Therefore, how to adopt more reasonable structural design and technology, control and improve vehicle frame and fixed supporting leg junction stress to concentrate the influence to connection reliability be those skilled in the art's technical issues that need to address.
Summary of the invention
An object of the present invention is to provide a kind of hoisting crane load larrying member, when the vehicle frame of these load larrying member is connected with fixed supporting leg, can improve the concentrated influence to connection reliability of stress of junction.Another object of the present invention provides a kind of wheel crane that comprises above-mentioned hoisting crane load larrying member.
For reaching first purpose of the present invention, the invention provides a kind of hoisting crane load larrying member, comprise vehicle frame back segment and fixed supporting leg, stretch out for the flexible box-like body of described movable supporting legs at the web place of described fixed supporting leg side, the vehicle frame back segment web of described vehicle frame back segment is connected with described fixed supporting leg, the end of described vehicle frame back segment web extends to the side of described fixed supporting leg, and is fixedly welded on the side of described fixed supporting leg.
Preferably, the end of the web of described vehicle frame back segment is connected in upper surface and the side plate of described box-like body, and welding is fixing.
Preferably, the web of described vehicle frame back segment comprises the main body web and is welded in the welding web of described main body web, described welding web is connected in described upper surface and the described side plate of described box-like body, and the thickness of described welding web is greater than the thickness of described main body web.
Preferably, described welding web is provided with brace panel, and described brace panel is connected in described upper surface and the described side plate of described box-like body.
Preferably, have through hole on the described welding web, described brace panel embeds in the described through hole, and fixing with the perisporium welding of described through hole, and the thickness of described brace panel is greater than the thickness of described welding web.
Preferably, described brace panel has centre hole, and the described upper surface of described box-like body and the abutting edge of described side plate all pass described centre hole.
Preferably, have the slit between the described upper surface of described box-like body and the abutting edge of described side plate, described centre hole is passed in described slit.
Preferably, the thickness at the edge that is connected with described main body web on the described welding web is tapered to the thickness of described main body web by the thickness of described welding web.
Preferably, the top board of the top board of described vehicle frame back segment and described fixed supporting leg is one.
Hoisting crane load larrying member provided by the present invention, the end of its vehicle frame back segment web extends to the side of fixed supporting leg, and be fixedly welded on the side of described fixed supporting leg, after welding is fixing, the weld seam that forms has been avoided the stress concentrated position, the stress concentrated position is positioned on the vehicle frame back segment web, be the stress concentrated position with bearing plate on every side be integral structure, its intensity is than the intensity height of weld seam, therefore, can reduce the influence that stress is concentrated, avoid stress to concentrate and destroy weld seam, improve the reliability that the vehicle frame back segment is connected with fixed supporting leg, the stability when guaranteeing the operation of hoisting crane lift heavy.
In further technical scheme, the web of vehicle frame back segment comprises the main body web and is welded in the welding web of main body web, the welding web is arranged in the stress concentrated position, and the thickness of welding web is greater than the thickness of main body web, namely strengthen the thickness of stress concentrated position place bearing plate, improve the ability of anti-pressure anti-torsion, further guarantee the reliability that the vehicle frame back segment is connected with fixed supporting leg.
In further technical scheme, the welding web is provided with brace panel, the thickness of brace panel is thicker than the thickness of welding web, brace panel is arranged in the focal point of stress place, i.e. the thickest brace panel of stress maximum region layout thickness in areal of stress concentration, the method that adopts gradient to strengthen, give full play to the performance of material, under the prerequisite of control complete vehicle weight, improve intensity effectively, guarantee connection reliability.
In further technical scheme, brace panel is provided with centre hole, and this centre hole is positioned at the focal point of stress place, and the effectively concentrated influence of dispersive stress improves the strained condition of stress raiser structure.
In further technical scheme, have the slit between the upper surface of box-like body and the abutting edge of side plate, centre hole is passed in the slit.This slit is equivalent to stress relief grooves, can cancel the restriction of the weld seam postwelding cooling shrinkage distortion of welding web and box-like body, namely side plate and the upper surface owing to box-like body do not join, after the weld seam welding cooling, allow welding web and brace panel to have certain shrinkage distortion, therefore, arranging of slit can be avoided owing to restriction weld seam postwelding cools off the welding residual stress that shrinkage distortion produces, thereby improves welding reliability between welding web, brace panel and the box-like body.
For reaching another object of the present invention, the present invention also provides a kind of wheel crane, comprises load larrying member and the derricking gear that is located thereon, and described load larrying member are above-mentioned each described hoisting crane load larrying member.Because above-mentioned load larrying member have above-mentioned technique effect, the wheel crane with these load larrying member also has identical technique effect.
Description of drawings
Fig. 1 is a kind of typical hoisting crane load larrying member scheme drawing, and this figure mainly illustrates vehicle frame and fixed supporting leg part;
Fig. 2 be among Fig. 1 the vehicle frame back segment with the back fixed supporting leg connection diagram;
Fig. 3 is the structural representation of a kind of specific embodiment of hoisting crane load larrying member provided by the present invention;
Fig. 4 is the local enlarged diagram at C position among Fig. 3;
Fig. 5 is the scheme drawing of areal of stress concentration among Fig. 4.
The specific embodiment
A core of the present invention provides a kind of hoisting crane load larrying member, when the vehicle frame of these load larrying member is connected with fixed supporting leg, can improve the concentrated influence to connection reliability of stress of junction.Another core of the present invention provides a kind of wheel crane that comprises above-mentioned hoisting crane load larrying member.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 3 and Fig. 4, Fig. 3 is the structural representation of a kind of specific embodiment of hoisting crane load larrying member provided by the present invention; Fig. 4 is the local enlarged diagram at C position among Fig. 3; Fig. 5 is the scheme drawing of areal of stress concentration among Fig. 4.
Hoisting crane load larrying member provided by the present invention comprise vehicle frame, fixed supporting leg and movable supporting legs.Fixed supporting leg 20 and back fixed supporting leg 30 before fixed supporting leg comprises, vehicle frame comprises vehicle frame leading portion 2 and vehicle frame back segment 3, vehicle frame back segment 3 is provided with revolution mounting center 31, so in actual job, vehicle frame back segment 3 is main supporting part, vehicle frame back segment 3 can be the box type construction that is shaped by the sheet material welding, and fixed supporting leg 20 and back fixed supporting leg 30 before connecting are in order to the support hoisting operation of getting on the bus.All stretch out for the flexible box-like body 301 of movable supporting legs at two coxostermum places of former and later two fixed supporting legs, as shown in Figure 3, the side plate 3011 of the box-like body 301 roughly web with back fixed supporting leg 30 is vertical, certainly, the orientation setting of box-like body 301 be not with vertical with web be necessary condition, satisfy the flexible of movable supporting legs, and stably support frame gets final product.
Following content describes with the example that is connected to of back fixed supporting leg 30 and vehicle frame back segment 3 among Fig. 3, particularly, only the web with the two the same side is connected to example, the opposite side structural principle is identical, in addition, the structural principle that vehicle frame back segment 3 and preceding fixed supporting leg 20 connect and the beneficial effect of generation are identical with following content, do not give unnecessary details at this.
The end of vehicle frame back segment web 32 in this embodiment, the end of vehicle frame back segment web 32 extend to the side of back fixed supporting leg 30, and are fixedly welded on the side of back fixed supporting leg 30.The end of vehicle frame back segment web 32 is overlapped in the upper surface 3012 of box-like body 301 among Fig. 4, and welding is fixing, in fact, among Fig. 4 the end of vehicle frame back segment web 32 has also been served as the part web of back fixed supporting leg 30.Need to prove, in order to satisfy design regulation, the end of vehicle frame back segment web 32 in fact preferably is connected in the upper surface 3012 of box-like body 301 and towards the side plate 3011 of vehicle frame back segment 3, and welding is fixing, as shown in Figure 4, the end of vehicle frame back segment web 32 is downward opening L shaped, be sticked on the box-like body 301, i.e. the end of vehicle frame back segment web 32, a part is overlapped in the upper surface 3012 of box-like body 301, a part is connected to the side plate 3011 of box-like body 301, and welding is fixing.
After vehicle frame back segment web 32 was fixed with 30 welding of back fixed supporting leg, the weld seam of formation mainly comprised: vehicle frame back segment web 32 and the part of part, vehicle frame back segment web 32 and the box-like body 301 upper surfaces overlap joint of box-like body 301 side plate butts, the marginal portion that vehicle frame back segment web 32 contacts with fixed supporting leg 30 webs upper ends, back (box-like body 301 is with top).By the prior art content as can be known, the stress maximum position of vehicle frame back segment 3 and fixed supporting leg 30 junctions, back, be positioned at the cross-section that back fixed supporting leg 30 and vehicle frame back segment 3 intersect, especially when bearing moment of torsion, stress mainly concentrates on this cross-section, in fact concentrate on the incline of cross-sectional plane, in Fig. 5, vehicle frame back segment web 32 and box-like body 301 side plates have crossing along the line, this is positioned at the part of box-like body more than 301 along the line and is stress concentrated position H, this bending-twisting sectional area does not along both side wait, vehicle frame back segment web 32 then, the upper surface of box-like body 301, and side plate 3011 threes' of box-like body 301 crossing place is focal point of stress H ', stress value maximum herein.In conjunction with Fig. 4 and Fig. 5 as can be known, vehicle frame back segment web 32 extends on the box-like body 301 in this embodiment, can make weld seam avoid the intersection of vehicle frame back segment 32 and back fixed supporting leg 30, be stress concentrated position H, and stress concentrated position H is positioned on the vehicle frame back segment web 32, be the bearing plate at stress concentrated position H place with bearing plate on every side be integral structure, its intensity is than the intensity height of weld seam, therefore, can reduce the influence that stress is concentrated, avoid stress to concentrate and destroy weld seam, improve vehicle frame back segment 3 and the reliability that back fixed supporting leg 30 is connected, the stability when guaranteeing the operation of hoisting crane lift heavy.
Further, vehicle frame back segment web 32 can be taked split-type structural, as shown in Figure 4, vehicle frame back segment web 32 comprise main body web 321 and be welded on the main body web 321 welding web 322, be connected in upper surface 3012 and the side plate 3011 of box-like body 301 by welding web 322, and weld the thickness of web 322 greater than the thickness of main body web 321.According to the foregoing analysis as can be known, vehicle frame back segment 3 is positioned at the section that the two intersects with the stress concentrated position H of fixed supporting leg 30 junctions, back, and maximum stress centrostigma H ' is the side plate 3011 of vehicle frame back segment web 32, box-like body 301 and the junction point of upper surface 3012, increase this focal point of stress H ' bearing plate thickness on every side, namely can improve antitorque further and pressure-proof intensity, so should be in further technical scheme, welding web 322 thickness of employing are greater than the thickness of main body web 321.The concrete size of welding web 322 should be departure point with the control of balance complete vehicle weight and strength demand, designs, welding web 322 shown in Fig. 4 is positioned at the end of web 32, covered stress maximum position H, with respect to main body web 321, its area is less.Main body web 321 can dock back integrally welded with welding web 322, as shown in Figure 4, main body web 321 has the L shaped breach that opening makes progress, welding web 322 butts up against in this L shaped breach and welding is fixed, the butt joint welding can increase the area of welding, improve welding reliability, keep the bulk strength of vehicle frame back segment web 32.Certainly, also can take other conventional modes to realize increasing web 32 end portion thickness.
Vehicle frame back segment web 32 for above-mentioned split setting, can make the thickness at the edge that docks with main body web 321 on the welding web 322, be tapered to the thickness of main body web 321 by the thickness of welding web 322, namely weld the edge that docks with main body web 321 on the web 322 and present certain gradient, adopt the docking technique of the slow transition of long groove, when avoiding thinner main body web 321 and thicker welding web 322 docking, concentrate at the stress that joint is certain owing to the abrupt change of cross-section causes, improve welding web 322 and main body web 321 welding reliability, further guarantee the whole strong degree of vehicle frame back segment web 32.
On the welding web 322 brace panel 3221 can also be set further, brace panel 3221 is connected in upper surface 3012 and the side plate 3011 of box-like body 301, namely further thickeies the bearing plate thickness that focal point of stress H ' locates.Can process through hole at welding web 322, brace panel 3221 embeds in the through holes, and dock the back welding with the perisporium of through hole fixing, and the thickness of brace panel 3221 is greater than the thickness that welds web 322.Brace panel 3221 shown in Fig. 4 is for having the circle of breach, and the brace panel 3221 of this structure is easier to processing, be convenient to and the docking of through hole perisporium, and stressed evenly.
In fact, welding web 322 and the brace panel 3221 of thickening successively are set, be to distribute according to stress gradient, the method that has adopted gradient to strengthen, as shown in the above, centered by focal point of stress H ', stress is to reducing gradually all around, therefore, correspondingly, make focal point of stress H ' all around the thickness of bearing plate also become gradient to successively decrease, as shown in Figure 5, in stress maximum region (focal point of stress H ' locates) the thickest brace panel 3221 is set, the periphery of brace panel 3221 (covering stress concentrated position H) arranges the welding web 322 that thickness takes second place, the left side of welding web 322 connects the thinnest main body web 321 of thickness again, this kind set-up mode can be brought into play material property to greatest extent, when guaranteeing vehicle frame back segment 3 with back fixed supporting leg 30 weld strengths, reduces the weight of car load as far as possible, during especially at hoister in large tonnage, the structure that this kind thickness arranges in gradient has more advantage.
In addition, can also process centre hole O at brace panel 3221, the edge that the upper surface 3012 of box-like body 301 and side plate 3011 form butt joint all passes this centre hole O.In conjunction with Fig. 3 and Fig. 4, because focal point of stress H ' is the side plate 3011 of vehicle frame back segment web 32, box-like body 301 and the junction point of upper surface 3012, after centre hole O is set in this embodiment, the junction point is expanded as centre hole O, stress can be dispersed on the circular arc perisporium of centre hole O, rather than converge, thereby the effectively dispersive stress influence of concentrating improves the strained condition of stress raiser structure.
Further, can make between the edge of the upper surface 3012 of box-like body 301 and side plate 3011 butt joints and have certain slit D, be that upper surface 3012 and side plate 3011 do not join, but reserve certain slit D, and make this slit D pass centre hole O on the brace panel 3221.The edge that box-like body 301 upper surfaces 3012 and side plate 3011 join is non-main force part, reserve slit D herein, this slit D is equivalent to stress relief grooves, can cancel the restriction of the weld seam postwelding cooling shrinkage distortion of welding web 322 and box-like body 301, namely side plate 3011 and the upper surface 3012 owing to box-like body 301 do not join, after the weld seam welding cooling, allow welding web 322 and brace panel 3221 to have certain shrinkage distortion, therefore, arranging of slit D can be avoided owing to restriction weld seam postwelding cools off the welding residual stress that shrinkage distortion produces, thereby improves welding web 322, welding reliability between brace panel 3221 and the box-like body 301.Certainly, the design of the size dimension of this slit D should be prerequisite with the load-carrying properties that do not influence welding web 322, brace panel 3221.
In addition, the top board of the vehicle frame back segment 3 shown in Fig. 3 is fixing with the top board welding of back fixed supporting leg 30, and in fact, also can make the two is integral structure, improves the connection fiduciary level of the two.
The present invention also provides a kind of wheel crane, comprises load larrying member and the derricking gear that is located thereon, and described load larrying member are the described hoisting crane load larrying member of above-mentioned arbitrary embodiment.Because above-mentioned hoisting crane load larrying member have above-mentioned technique effect, the wheel crane with these load larrying member also has identical technique effect, does not give unnecessary details at this.
More than a kind of wheel crane provided by the present invention and load larrying member thereof are described in detail.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (9)
1. hoisting crane load larrying member, comprise vehicle frame back segment (3), fixed supporting leg and movable supporting legs, stretch out for the flexible box-like body (301) of described movable supporting legs described fixed supporting leg side, the vehicle frame back segment web (32) of described vehicle frame back segment (3) is connected with described fixed supporting leg, it is characterized in that, the end of described vehicle frame back segment web (32) extends to the side of described fixed supporting leg, and is fixedly welded on the side of described fixed supporting leg; The end of described vehicle frame back segment web (32) is connected in upper surface (3012) and the side plate (3011) of described box-like body (301), and welding is fixing.
2. hoisting crane load larrying member according to claim 1, it is characterized in that, described vehicle frame back segment web (32) comprises main body web (321) and is welded in the welding web (322) of described main body web (321), described welding web (322) is connected in described upper surface (3012) and the described side plate (3011) of described box-like body (301), and the thickness of described welding web (322) is greater than the thickness of described main body web (321).
3. hoisting crane load larrying member according to claim 2, it is characterized in that, described welding web (322) is provided with brace panel (3221), and described brace panel (3221) is connected in described upper surface (3012) and the described side plate (3011) of described box-like body (301).
4. hoisting crane load larrying member according to claim 3, it is characterized in that, has through hole on the described welding web (322), described brace panel (3221) embeds in the described through hole, and fixing with the perisporium welding of described through hole, and the thickness of described brace panel (3221) is greater than the thickness of described welding web (322).
5. hoisting crane load larrying member according to claim 4, it is characterized in that, described brace panel (3221) has centre hole (O), and the described upper surface (3012) of described box-like body (301) and the abutting edge of described side plate (3011) all pass described centre hole (O).
6. hoisting crane load larrying member according to claim 5 is characterized in that, have slit (D) between the described upper surface (3012) of described box-like body (301) and the abutting edge of described side plate (3011), and described slit (D) passes described centre hole (O).
7. hoisting crane load larrying member according to claim 6, it is characterized in that, described welding web (322) is gone up the thickness at the edge that is connected with described main body web (321), is tapered to the thickness of described main body web (321) by the thickness of described welding web (322).
8. hoisting crane load larrying member according to claim 7 is characterized in that, the top board of described vehicle frame back segment (3) and the top board of described fixed supporting leg are one.
9. a wheel crane comprises load larrying member and the derricking gear that is located thereon, and it is characterized in that described load larrying member are each described hoisting crane load larrying member of claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161293 CN102310845B (en) | 2011-06-15 | 2011-06-15 | Wheel crane and bearing structure thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110161293 CN102310845B (en) | 2011-06-15 | 2011-06-15 | Wheel crane and bearing structure thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102310845A CN102310845A (en) | 2012-01-11 |
| CN102310845B true CN102310845B (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110161293 Active CN102310845B (en) | 2011-06-15 | 2011-06-15 | Wheel crane and bearing structure thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103291225B (en) * | 2013-06-25 | 2015-06-17 | 徐州重型机械有限公司 | Drilling rig and rig frame thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0999150A1 (en) * | 1998-11-06 | 2000-05-10 | KEPPLER GmbH Fahrzeugbau | Platform with supporting legs, especially load platform or trailer body |
| DE20201492U1 (en) * | 2001-02-01 | 2002-07-11 | Kuperus Gjalt | Kart with lifting device and lifting device |
| CN102001585A (en) * | 2010-12-21 | 2011-04-06 | 徐州重型机械有限公司 | Crane and frame thereof |
| CN102009919A (en) * | 2010-12-06 | 2011-04-13 | 徐州重型机械有限公司 | Crane and frame thereof |
| CN202148152U (en) * | 2011-06-15 | 2012-02-22 | 徐州重型机械有限公司 | Wheel crane and bearing structure of wheel crane |
-
2011
- 2011-06-15 CN CN 201110161293 patent/CN102310845B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0999150A1 (en) * | 1998-11-06 | 2000-05-10 | KEPPLER GmbH Fahrzeugbau | Platform with supporting legs, especially load platform or trailer body |
| DE20201492U1 (en) * | 2001-02-01 | 2002-07-11 | Kuperus Gjalt | Kart with lifting device and lifting device |
| CN102009919A (en) * | 2010-12-06 | 2011-04-13 | 徐州重型机械有限公司 | Crane and frame thereof |
| CN102001585A (en) * | 2010-12-21 | 2011-04-06 | 徐州重型机械有限公司 | Crane and frame thereof |
| CN202148152U (en) * | 2011-06-15 | 2012-02-22 | 徐州重型机械有限公司 | Wheel crane and bearing structure of wheel crane |
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| CN102310845A (en) | 2012-01-11 |
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